19．gave　由全文内容知，叙述的是过去的事情，所以用过去时。

　　20．For　for the first time“第一次……”。

　　21．harder　此处暗含与以前的比较，所以用比较级。

　　22．them　代词用于指代上文的beggars。

　　23．with　greet...with...“用……迎接……”。

　　24．activity　此处为句子的主语，用名词。

　　25．to show　be meant to do“意味着……”。

　　Ⅱ.阅读(共两节，满分50分)

　　第一节　阅读理解(共20小题；每小题2分，满分40分)

　　A

　　Eating fat foods can be bad for your health，but simply smelling their cooking smoke might be harmful，too.Scientists reported that at a meeting of the American Chemical Society in San Francisco.

　　Some major restaurants have already changed the way they cook as a result of the research.The findings should also help experts to develop better filtering technologies to make healthier choices in the kitchen.

　　People have been cooking food for more than 100,000 years.Chimneys and windows have already been around since the Dark Ages.Yet，it wasn't until the mid­1990s that scientists started studying the components of cooking smoke and how that smoke might increase air pollution.

　　The first study on cooking smoke，carried out about 20 years ago，found that the most and the dirtiest cooking smoke came from hot hamburgers under high heat.Other foods followed far behind，including cooked French fries or baked pizza.In the new study，Kuehn and his colleagues used a new kind of equipment to examine more exactly the cooking smoke that comes out of a large variety of foods being cooked.They found that the dirtiest smoke by far came from fried chicken being cooked with peanut oil.Hot hamburgers came next.

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